When magnetic field lines are closer together the magnetic field is:

What type of magnet has its own magnetic field?

The Earth has:

What has to flow through a wire to make it magnetic?

A solenoid is:

If you run an electric current through a solenoid, it makes:

The magnetic material in the centre of the coil of an electromagnet is called the:

This material stops being magnetic when the electromagnet has no current running through it.

This material stays magnetic when the electromagnet has no current running through it.

3 things that effect the strength of an electromagnet are:

Which one is not a use of an electromagnet?

Which is stronger, a permanent magnet or an electromagnet?